CN209690600U - A kind of low high-resolution linear array camera lens of distortion - Google Patents
A kind of low high-resolution linear array camera lens of distortion Download PDFInfo
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- CN209690600U CN209690600U CN201920495545.2U CN201920495545U CN209690600U CN 209690600 U CN209690600 U CN 209690600U CN 201920495545 U CN201920495545 U CN 201920495545U CN 209690600 U CN209690600 U CN 209690600U
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Abstract
The utility model belongs to computer vision technical field, more particularly to a kind of low high-resolution linear array camera lens of distortion, including the first lens with positive light coke, the second lens with positive light coke, the third lens with positive light coke, the 4th lens with negative power, the 5th lens, the 6th lens with positive light coke, the 7th lens, the 8th lens with positive light coke and the 9th lens with positive light coke with negative power with negative power；The third lens and the 4th lens gluing form the first balsaming lens group, and the 5th lens, the 6th lens, the 7th lens gluing form the second balsaming lens group；The focal length of optical system and half image height are respectively f' and y', meet relational expression: | y'/f'| >=0.27, the utility model have the characteristics that low distortion, high-resolution and big target surface, greatly meet the demand in market.
Description
Technical field
The utility model belongs to computer vision technical field, and in particular to a kind of low high-resolution linear array camera lens of distortion.
Background technique
Machine vision is to replace human eye with machine to measure and judge, with the rise and intelligence of 4.0 concept of global industry
The development that can be manufactured, so that machine vision technique is just quickly applied to industrial circle.Wherein, camera lens is most crucial in machine vision
Component, be broadly divided into face battle array camera lens and linear array mirror first two.Compared to face battle array camera lens, linear array camera lens is mainly used in high-precision
Scanning survey field, such as the detection of metal, plastics, paper and fiber and other material size or surface defect.
However, with the continuous development of machine vision industry and the continuous improvement of linear array type camera sensor resolution ratio,
The technical requirements of linear array camera lens are also continuously improved.Therefore, lower distortion, bigger target surface and higher resolution ratio are lines
The development trend of battle array camera lens, traditional linear array camera lens have been unsatisfactory for the application requirement of industry.
In view of this, it is necessary to which existing linear array camera lens is further improved to meet the needs of industry.
Utility model content
The purpose of this utility model is that: in view of the deficiencies of the prior art, and a kind of low distortion high-resolution lines proposed
Camera lens is swept, which has the characteristics that low distortion, high-resolution and big target surface, greatly meets the demand in market.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of low high-resolution linear array camera lens of distortion, including mechanical system and the light being installed on inside the mechanical system
System, the optical system include set gradually by object space to image space have positive light coke, bent moon structure first thoroughly
Mirror, the second lens with positive light coke, bent moon structure, the third lens with positive light coke, biconvex structure have negative light focus
4th lens of degree, double-concave structure, the 5th lens with negative power, double-concave structure, with positive light coke, biconvex structure
6th lens, with negative power, bent moon structure the 7th lens, have positive light coke, bent moon structure the 8th lens with
And with positive light coke, the 9th lens of bent moon structure；
Wherein, the third lens and the 4th lens gluing form the first balsaming lens group with negative power,
5th lens, the 6th lens and the 7th lens gluing form the second balsaming lens group with negative power；The light
The focal length of system and half image height are respectively f' and y', they meet relational expression: | y'/f'| >=0.27.
As a kind of improvement of the high-resolution linear array camera lens of low distortion described in the utility model, first lens
Focal length is f1, and the focal lengths of second lens is f2, and the focal length f' of they and the optical system meets relational expression respectively: 0.5 <
|f1/f'|<1.5；0.5<|f2/f'|<2.
As a kind of improvement of the low high-resolution linear array camera lens of distortion described in the utility model, described first is glued saturating
The focal length of microscope group is fU1, meets relational expression with the focal length f' of the optical system: 0.35 < | fU1/f'| < 1.
As a kind of improvement of the high-resolution linear array camera lens of low distortion described in the utility model, the third lens
Refractive index is n3, and Abbe number v3 meets relational expression: 1.47 < n3 < 1.60；55<v3<70.
As a kind of improvement of the high-resolution linear array camera lens of low distortion described in the utility model, the 4th lens
Refractive index is n4, and Abbe number v4 meets relational expression: 1.65 < n4 < 1.80；20<v4<35.
As a kind of improvement of the low high-resolution linear array camera lens of distortion described in the utility model, described second is glued saturating
The focal length of microscope group is fU2, meets relational expression with the focal length f' of the optical system: 0.2 < | fU2/f'| < 1.
As a kind of improvement of the high-resolution linear array camera lens of low distortion described in the utility model, the 5th lens
Refractive index is n5, and Abbe number v5 meets relational expression: 1.55 < n5 < 1.75；30<v5<45；The refractive index of 6th lens
Meet relational expression: 1.45 < n6 < 1.55 for n6, Abbe number v6；70<v6<85；The refractive index of 7th lens is n7,
Abbe number is v7, meets relational expression: 1.55 < n7 < 1.70；55<v7<70.
As a kind of improvement of the high-resolution linear array camera lens of low distortion described in the utility model, the 8th lens
Focal length is f8, meets relational expression with the focal length f' of the optical system: 0.5 < | f8/f'| < 2.
As a kind of improvement of the high-resolution linear array camera lens of low distortion described in the utility model, the 9th lens
Focal length is f9, meets relational expression with the optical system focal length f': 0.5 < | f9/f'| < 2.
It further include diaphragm as a kind of improvement of the low high-resolution linear array camera lens of distortion described in the utility model, institute
It states diaphragm to be set between the 4th lens and the 5th lens, the aperture of the diaphragm is circular hole, the light of the diaphragm
It encloses adjustable within the scope of F3.8~F16.
Compared with prior art, the utility model has the following beneficial effects:
1) the utility model has the structure similar with double gauss, can eliminate a variety of aberrations, can also improve camera lens
Effective aperture；
2) the utility model can control optical distortion by distributing the focal power of each lens and balsaming lens group, to reach
To the demand of industry；In addition, by double gauss structure latter half be arranged the second balsaming lens group, solve big target surface,
The problem of high-resolution linear array camera lens color difference difficulty corrects；Meanwhile also maintaining symmetry with first half；According to positive negative lens
Anaberration, the 7th lens in the second balsaming lens group are negative power, are further added by one in traditional double gauss structure basis
Negative-power lenses are more easily corrected optical system, balance aberration, tolerance sensitivities are reduced, to realize high-resolution
Performance requirement.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment and its explanation of the utility model are not constituted for explaining the utility model to the utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the index path of the utility model；
Wherein, 0- optical system；The first lens of G1-；The second lens of G2-；G3- the third lens；The 4th lens of G4-；G5-
Five lens；The 6th lens of G6-；The 7th lens of G7-；The 8th lens of G8-；The 9th lens of G9-；U1- the first balsaming lens group；U2-
Second balsaming lens group；S- diaphragm.
Specific embodiment
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer within an acceptable error range, those skilled in the art can within a certain error range solve described in
Technical problem basically reaches the technical effect.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as level " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally
Utility model and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
The utility model is described in further detail below in conjunction with attached drawing, but not as the restriction to the utility model.
As shown in Fig. 1~2, a kind of low high-resolution linear array camera lens of distortion, including mechanical system and it is installed on mechanical system
Unite internal optical system 0, optical system 0 include set gradually by object space to image space there is positive light coke, bent moon structure
The first lens G1, the second lens G2 with positive light coke, bent moon structure has positive light coke, the third of biconvex structure saturating
Mirror G3, the 4th lens G4 with negative power, double-concave structure, the 5th lens G5 with negative power, double-concave structure have
6th lens G6 of positive light coke, biconvex structure, the 7th lens G7 with negative power, bent moon structure have positive light coke
, the 8th lens G8 of bent moon structure and with positive light coke, the 9th lens G9 of bent moon structure；
Wherein, the third lens G3 and the 4th lens G4 gluing form the first balsaming lens group U1 with negative power, the
Five lens G5, the 6th lens G6 and the 7th lens G7 gluing form the second balsaming lens group U2 with negative power；Optics
The focal length of system 0 and half image height are respectively f' and y', they meet relational expression: | y'/f'| >=0.27.
Preferably, the focal length of the first lens G1 is f1, and the focal length of the second lens G2 is f2, the coke of they and optical system 0
Meet relational expression respectively away from f': 0.5 < | f1/f'| < 1.5；0.5 < | f2/f'| < 2, in the present embodiment, the material of the first lens G1
Material is the crown glass of low dispersion.
Preferably, the focal length of the first balsaming lens group U1 is fU1, meets relational expression with the focal length f' of optical system 0: 0.35
< | fU1/f'| < 1, in the present embodiment, the material of the second lens G2 are flint glass.
Preferably, the refractive index of the third lens G3 is n3, and Abbe number v3 meets relational expression: 1.47 < n3 < 1.60；55
<v3<70。
Preferably, the refractive index of the 4th lens G4 is n4, and Abbe number v4 meets relational expression: 1.65 < n4 < 1.80；20
<v4<35。
Preferably, the focal length of the second balsaming lens group U2 is fU2, meets relational expression with the focal length f' of optical system 0: 0.2 <
|fU2/f'|<1。
Preferably, the refractive index of the 5th lens G5 is n5, and Abbe number v5 meets relational expression: 1.55 < n5 < 1.75；30
<v5<45；The refractive index of 6th lens G6 is n6, and Abbe number v6 meets relational expression: 1.45 < n6 < 1.55；70<v6<85；
The refractive index of 7th lens G7 is n7, and Abbe number v7 meets relational expression: 1.55 < n7 < 1.70；55<v7<70.
Preferably, the focal length of the 8th lens G8 is f8, meets relational expression with the focal length f' of optical system 0: 0.5 < | f8/f'|
< 2, in the present embodiment, the material of the 8th lens G8 is flint glass.
Preferably, the focal length of the 9th lens G9 is f9, meets relational expression with 0 focal length f' of optical system: 0.5 < | f9/f'| <
2, in the present embodiment, the material of the 9th lens G9 is the crown glass of low dispersion.
It preferably, further include diaphragm S, diaphragm S is set between the 4th lens G4 and the 5th lens G5, in the present embodiment
In, the aperture of diaphragm S is circular hole, and the aperture of diaphragm S is adjustable within the scope of F3.8~F16.
In this example, the data of optical system are as follows:
In the present embodiment, half image height data of the focal length and optical system 0 of each lens and balsaming lens group are as follows:
| f'(mm) | f1(mm) | f2(mm) | fU1(mm) | fU2(mm) | f8(mm) | f9(mm) | y'(mm) |
| 116 | 84.9 | 111.4 | -68.7 | -40.2 | 88.5 | 114.1 | 41 |
Each relational expression: | f1/f'|=0.73；| f2/f'|=0.96；| fU1/f'|=0.59；| fU2/f'|=0.35；
| f8/f'|=0.76；| f9/f'|=0.98；| y'/f'|=0.35, satisfaction 0.5 < | f1/f'| < 1.5,0.5 < | f2/f'| < 2,
0.35<| fU1/f'|<1,0.2<| fU2/f'|<1,0.5<| f8/f'|<2,0.5<| f9/f'|<2, | y'/f'|>=0.27.
In this example, the operating distance of linear array lens optical system 0 is 166 ± 5mm, focal length 116mm, object-image conjugate
Away from for 413mm, F# 3.8, enlargement ratio is about 1.0X, and half image height y' is 41mm, and maximum can match 16K resolution ratio linear array phase
Machine, the distortion of optical system 0 is less than 0.015%.
Several preferred embodiments of the utility model have shown and described in above description, but as previously described, it should be understood that
The utility model is not limited to forms disclosed herein, and is not to be taken as the exclusion to other embodiments, and can be used for
Other combinations, modifications, and environments, and above-mentioned introduction or correlation can be passed through within the scope of the inventive concept described herein
The technology or knowledge in field are modified.And changes and modifications made by those skilled in the art do not depart from the spirit of the utility model
And range, then it all should be in the protection scope of the appended claims for the utility model.
Claims (10)
1. a kind of low high-resolution linear array camera lens of distortion, it is characterised in that: including mechanical system and be installed on the mechanical system
Unite internal optical system (0), the optical system (0) include set gradually by object space to image space have positive light coke,
The first lens (G1) of bent moon structure, the second lens (G2) with positive light coke, bent moon structure have positive light coke, biconvex
The third lens (G3) of structure, the 4th lens (G4) with negative power, double-concave structure have negative power, double-concave structure
The 5th lens (G5), the 6th lens (G6) with positive light coke, biconvex structure, with negative power, bent moon structure the
Seven lens (G7), the 8th lens (G8) with positive light coke, bent moon structure and with positive light coke, bent moon structure
9th lens (G9)；
Wherein, the third lens (G3) and the glued formation of the 4th lens (G4) have the first balsaming lens of negative power
Group (U1), the 5th lens (G5), the 6th lens (G6) and the 7th lens (G7) are glued, which to be formed, has the of negative power
Two balsaming lens groups (U2)；The focal length and half image height of the optical system (0) are respectively f' and y', they meet relational expression: |
y'/f'|≥0.27。
2. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: first lens (G1)
Focal length be f1, the focal lengths of second lens (G2) is f2, and the focal length f' of they and the optical system (0) meets pass respectively
It is formula: 0.5 < | f1/f'| < 1.5；0.5<|f2/f'|<2.
3. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: first balsaming lens
The focal length of group (U1) is fU1, meets relational expression with the focal length f' of the optical system (0): 0.35 < | fU1/f'| < 1.
4. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: the third lens (G3)
Refractive index be n3, Abbe number v3 meets relational expression: 1.47 < n3 < 1.60；55<v3<70.
5. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: the 4th lens (G4)
Refractive index be n4, Abbe number v4 meets relational expression: 1.65 < n4 < 1.80；20<v4<35.
6. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: second balsaming lens
The focal length of group (U2) is fU2, meets relational expression with the focal length f' of the optical system (0): 0.2 < | fU2/f'| < 1.
7. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: the 5th lens (G5)
Refractive index be n5, Abbe number v5 meets relational expression: 1.55 < n5 < 1.75；30<v5<45；6th lens (G6)
Refractive index is n6, and Abbe number v6 meets relational expression: 1.45 < n6 < 1.55；70<v6<85；The folding of 7th lens (G7)
Penetrating rate is n7, and Abbe number v7 meets relational expression: 1.55 < n7 < 1.70；55<v7<70.
8. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: the 8th lens (G8)
Focal length be f8, meet relational expression with the focal length f' of the optical system (0): 0.5 < | f8/f'| < 2.
9. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: the 9th lens (G9)
Focal length be f9, meet relational expression with the optical system (0) focal length f': 0.5 < | f9/f'| < 2.
10. the low high-resolution linear array camera lens of distortion according to claim 1, it is characterised in that: it further include diaphragm (S),
The diaphragm (S) is set between the 4th lens (G4) and the 5th lens (G5), and the aperture of the diaphragm (S) is circle
The aperture in hole, the diaphragm (S) is adjustable within the scope of F3.8~F16.
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| CN201920495545.2U CN209690600U (en) | 2019-04-12 | 2019-04-12 | A kind of low high-resolution linear array camera lens of distortion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110927957A (en) * | 2019-12-18 | 2020-03-27 | 精微视达医疗科技（武汉）有限公司 | Miniature immersion liquid microobjective |
| CN113552692A (en) * | 2020-04-23 | 2021-10-26 | 上海微电子装备（集团）股份有限公司 | Imaging optical system and detection device |
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| CN110927957A (en) * | 2019-12-18 | 2020-03-27 | 精微视达医疗科技（武汉）有限公司 | Miniature immersion liquid microobjective |
| CN110927957B (en) * | 2019-12-18 | 2021-07-06 | 精微视达医疗科技（武汉）有限公司 | Miniature immersion liquid microobjective |
| CN113552692A (en) * | 2020-04-23 | 2021-10-26 | 上海微电子装备（集团）股份有限公司 | Imaging optical system and detection device |
| CN113552692B (en) * | 2020-04-23 | 2022-09-23 | 上海微电子装备（集团）股份有限公司 | Imaging optical system and detection device |
| WO2022056988A1 (en) * | 2020-09-15 | 2022-03-24 | 诚瑞光学(深圳)有限公司 | Camera optical lens |
| CN114089511A (en) * | 2021-11-26 | 2022-02-25 | 湖北久之洋红外***股份有限公司 | Very wide band transmission type telescopic optical system |
| CN114089511B (en) * | 2021-11-26 | 2024-01-16 | 湖北久之洋红外***股份有限公司 | Very wide band transmission type telescopic optical system |
| CN114815169A (en) * | 2022-05-31 | 2022-07-29 | 舜宇光学(中山)有限公司 | Imaging lens |
| CN114815169B (en) * | 2022-05-31 | 2024-02-23 | 舜宇光学(中山)有限公司 | Imaging lens |
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